Question

Prove that $\chi_y = \prod\limits_{\sigma \in G} \left (X-\sigma(y) \right ).$

score 89 · Answer 1 · 2026-04-15 21:05:53

89

Views

Prove that $\chi_y = \prod\limits_{\sigma \in G} \left (X-\sigma(y) \right ).$

Published on 15 Apr 2026 - 21:05

score 206 · Answer 2 · 2026-04-12 17:06:03

206

Views

Ring of Cauchy sequences.

Published on 12 Apr 2026 - 17:06

score 87 · Answer 3 · 2026-04-11 00:11:07

87

Views

$1+x$ is a unit, then $x \in Rad(A)$?

Published on 11 Apr 2026 - 0:11

score 473 · Answer 4 · 2026-04-16 01:28:52

473

Views

Is $\mathbb{C}[x,y]/\langle x^2+y^2\rangle$ a field?

Published on 16 Apr 2026 - 1:28

score 51 · Answer 5 · 2026-04-11 22:06:08

51

Views

Defining $f$ and $g$ in $\mathbb{Z} \xrightarrow[]{f} \frac{\mathbb{Z}}{2 \mathbb{Z}} \xrightarrow[]{g} \mathbb{Z}$ such $fg=1_{\mathbb{Z}}$

Published on 11 Apr 2026 - 22:06

score 66 · Answer 6 · 2026-04-09 17:32:31

66

Views

Properties of a ring $R$ guaranteed by an equivalence relation and certain operations

Published on 09 Apr 2026 - 17:32

score 129 · Answer 7 · 2026-03-26 04:34:03

129

Views

Examples of 1 dimensional Noetherian rings that aren't domains

Published on 26 Mar 2026 - 4:34

score 64 · Answer 8 · 2026-03-25 17:41:53

64

Views

How to show two rings $(A_f)_{g'}$ and $A_{f g''}$, where $g' = g''/f^n$, are isomorphic?

Published on 25 Mar 2026 - 17:41

score 38 · Answer 9 · 2026-04-24 02:18:53

38

Views

Question about Associates in $\mathbb Q$

Published on 24 Apr 2026 - 2:18

score 57 · Answer 10 · 2026-04-14 14:23:13

57

Views

Polynomial invariants of finite groups preserved under epimorphism

Published on 14 Apr 2026 - 14:23

score 47 · Answer 11 · 2026-04-15 00:22:18

47

Views

Set of all kth column matrices in matix ring over a division ring is a minimal left ideal.

Published on 15 Apr 2026 - 0:22

score 169 · Answer 12 · 2026-04-16 00:30:55

169

Views

Prove identity $\operatorname{Supp}(M/tM)= \operatorname{Supp}(M) \cap V(tA)$ between supports

Published on 16 Apr 2026 - 0:30

score 104 · Answer 13 · 2026-04-09 12:34:04

104

Views

The smallest commutative subring of $\mathbb{Z}\times \mathbb{Z}$

Published on 09 Apr 2026 - 12:34

score 538 · Answer 14 · 2026-04-16 02:37:10

538

Views

Prove (or disprove) that a polynomial ring modulo an ideal is a field

Published on 16 Apr 2026 - 2:37

score 165 · Answer 15 · 2026-04-16 17:46:56

165

Views

If a $2x2$ matrix is not a unit or non-zero, prove that it is a zero divisor

Published on 16 Apr 2026 - 17:46

List Question

Prove that $\chi_y = \prod\limits_{\sigma \in G} \left (X-\sigma(y) \right ).$

Ring of Cauchy sequences.

$1+x$ is a unit, then $x \in Rad(A)$?

Is $\mathbb{C}[x,y]/\langle x^2+y^2\rangle$ a field?

Defining $f$ and $g$ in $\mathbb{Z} \xrightarrow[]{f} \frac{\mathbb{Z}}{2 \mathbb{Z}} \xrightarrow[]{g} \mathbb{Z}$ such $fg=1_{\mathbb{Z}}$

Properties of a ring $R$ guaranteed by an equivalence relation and certain operations

Examples of 1 dimensional Noetherian rings that aren't domains

How to show two rings $(A_f)_{g'}$ and $A_{f g''}$, where $g' = g''/f^n$, are isomorphic?

Question about Associates in $\mathbb Q$

Polynomial invariants of finite groups preserved under epimorphism

Set of all kth column matrices in matix ring over a division ring is a minimal left ideal.

Prove identity $\operatorname{Supp}(M/tM)= \operatorname{Supp}(M) \cap V(tA)$ between supports

The smallest commutative subring of $\mathbb{Z}\times \mathbb{Z}$

Prove (or disprove) that a polynomial ring modulo an ideal is a field

If a $2x2$ matrix is not a unit or non-zero, prove that it is a zero divisor

Trending Questions

Popular # Hahtags

Popular Questions